Volume 37, October-December, December 2016, Pages 561-571
Mahmoud Khattab; Mostafa Raslan; Ali Nabih; Amira Selim
Volume 37, October-December, December 2016, Pages 647-659
Mahmoud Khattab; Ashraf Shehata; Eman Abou El - Saadate; Khamis Al-Hasni